Influence of Process Parameters on Wire EDM Process for AISI 316 Stainless Steel

Abstract

-The optimization of wire electrical discharge machining (WEDM) parameters for AISI 316 stainless steel using Taguchi's robust design approach is proposed. Experimentation is planned as per Taguchi's L27 orthogonal array. Each experiment has to be performed under different process parameters of pulse on time, pulse off time, pulse peak current, wire tension and wire feed rate. Two responses namely material removal rate and surface roughness (Ra) were considered for each experiment. The optimum machining parameter combination is obtained by using the analysis of signal-to-noise (S/N) ratio. The level of importance of the machining parameters on the material removal rate and surface roughness is determined by using analysis of variance (ANOVA).